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(No Model.)

J. A. GRAY. LOCK.

No. 606,282. Patented June 28, 1898.

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//// 1 VIA JOSEPH A. GRAY, OF` CARROLLTOVN, PENNSYLVANIA.

LOCK.

SPECIFICATION forming part of Letters Patent No. 606,282, datedJ une 28, 1898.

l Application nea rune 25,1897. y serai No. 642.303. (No man.)

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Be it known that I, JOSEPH A. GRAY, a citizen of the United States, residing at Carrolltown, in the county of Cambria and State of Pennsylvania, have invented a new and useful Lock, of which the following is a 4specification. a

My invention relates to looks, and particularly to a colnbined lock and latch of the gravity actuated type wherein the use of springs is dispensed with, and both the bolt and the tumbler, whereby the bolt is locked in its extended position, are actuated solely by gravity, the tumbler lbeing readily adjustable to release the bolt, and thus convert the device into a latch.

The objects of the invention are to provide a lock of the class named which shall be simple in construction, requiring the minimum number of parts to accomplish the necessary functions, and so arranged as to insure promptness and ease of operation and at the same time attain a degree of durability adapting it for use under the various conditions to which devices of this class are incident.

Further objects and advantages of this invention will appear in the following description,and the novel features thereof will be particularly pointed out in the appendedclaims.

In the drawings, Figure 1 is a front view of a lock constructed in accordance with my invention, the face-'plate being omitted and the tumbler being shown in its disengaged" Fig. 2 is a similar View showing.

. in perspective of the bolt detached.

Similar numerals of reference indicate corresponding parts in all the iigu res of the drawings.

The casing 1 may be adapted for arrangement either in a mortise or upon the surface of a closure, and within the same is disposed for longitudinal movement a bolt 2, of which the head 3 operates in a bolt-opening in the end of the casing. The shank of the bolt is provided with a longitudinal slot 4, which receives a fixed guide-pin 5 in the casing, and the rear end of the shank is constructed upon opposite sides with seats 6, formed by pairs of laterally-projecting lugs or ears 7. In one of these seats is arranged the extremity of an operating-arm', extending in an approximately perpendicular position from an `actuating-weight 9, said weight serving to yieldingly hold the free end of the operating-arm in its advanced position, (shown in Figs. 1 and 2,) and the hub of the operating-arm is fitted upon the'knob-spindlelO. It will be seen that the bolt may be reversed in position to engage either of the seats G with the operating-arm, thus reversing the lockI and adapting it for use upon either Va right or a left hand door. f

. Arranged in operative relation with the bolt and preferably above-the same is a tumbler mechanism which,` inthe construction illustrated,pconsists of a single tumblerll, having at one end a longitudinal slot 12, fitted upon a guide-pin 13, and provided at the other or free end with a shoulder 14, adapted to engage with the bolt when said tumbler is in its depressed position. In the construction illustrated said shoulder engages the rear end of the bolt, and the tumbler is yieldingly held in its depressed position by gravity, inasmuch as the free end of the tumbler is enlarged or Weighted. Y Furthermore, the tumbler is provided with an irregular limiting-slot, of which the body portion 15 is longitudinally disposed and which is provided With terminal upward extensions 16 and 17 of different lengths, and this limiting-slot receives aix'ed limiting-pin 1S, secured to the casing. /Vhen the tumbler is raised to bring the longitu'dinal'or main portion of the slot into alinement with the limiting-pin, the tumbler may be moved longitudinally to bring either of the extensions 16 and 17 into alinement with the pin, and this transverse and longitudinal movement of the tumbler to accomplish said adjustments is attainable by means of a key-notch 19, formed in the under side of the tumbler contiguous to a key- IOO the short extension 17 of the limiting-slot with the pin 18 the downward movement of the free end of the tumbler is limited, and hence it is held out of engagement with the bolt.

From the above description it will be seen that both the bolt and the tumbler are actuated by gravity and are yieldingly held in their operative positions by said force. It will be understood, furthermore, that While in the drawings I have illustrated but a single member in the tumbler mechanism a plurality of such members may be employed to increase the difficulty of operating the lock except by means of a special key provided for the purpose. p

In my lock the tumbleris mounted for differential movement With respect to the bolt, so that when the tumbler is moved to its advanced position itis raised and held out of the path of the bolt for the purpose of permitting the latter to be actuated by the knobspindle and its Weighted arm, whereby the bolt serves both as the latch and lock. This differential movement of the tumbler is important in that it is held out of the path of the bolt When the latter is to be actuated by the spindle, but When the tumbler is to be locked in its shot or projected position the tumbler is adapted to be lowered into engagement with the bolt and lock the latter against retraction under the influence of the spindle. In addition to the vertical differential movement relatively to the bolt the tumbler is also capable of a limited endwise movement parallel to the bolt, so that when the bolt is projected the tumbler may be moved into locking engagement therewith under the influence of the key-Wards. It will be noted by reference to Fig. 1 that the tumbler is held in its raised position by the stud 17, fitting in the short extension 'of the slot 15,thus sustaining the shoulder 14 out of the path of the bolt and permitting` the latter to operate freely when the spindle is turned; but when the bolt is projected in the position for locking the key is inserted in the lock and turned, so as to iirst lift the tumbler for the stud 17 to clear the slot extension 18 and then move the tumbler endwise for the stud to come opposite to the slot extension 16, whereupon the tumbler drops by gravity for the stud 17 to enter the slot extension 1G, and the locking-shoulder 111 drops in rear of the latch to lock the latter against retraction by the knob-spindle.

Various changes in the form, proportion, and the minor details of construction may be resorted to Without departing from the spirit orsacrificing any of the advantages of this invention.

Having described my invention, What I claim is- 1. In a combined latch and lock, thevoombination with a spindle-controlled gravitybolt, of a gravity-tu mbler mounted above the bolt for dierential Vertical movement with respect thereto and having at one end a longitudinal guide-slot and at its enlarged end a longitudinallslot, 15,With extensions, 16, 18, of different lengths, a fixed stud playing in the guide-slot to permitthe tumbler to have a swinging and sliding adjustment thereon, and another fixed stud playing in the slot, 15, to enter the short extension, 18, and sustain the tumbler in a position above and out of the path of the bolt, said tumbler having a locking-shoulder, 14, adapted to drop in rear of the bolt When the tumbler is moved to a position for the stud, 17, to enter the long extension, 16, of the slot, the Whole combined and arranged for service, substantially as described.

2. In a combined latch and lock, the combination With a spindle-controlled gravitybolt, of a gravity-tumbler mounted above the bolt for differential vertical movement with respect thereto, means for guiding and limiting both the horizontal and vertical movement of the tumbler, the latter being provided with a locking-shoulder adapted to drop in rear of the bolt, and means for sustaining the tumbler in a position above and out of the path-of the bolt,all substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of tWo Witnesses.

JOSEPH A. GRAY.

Witnesses:

JAMES SHARBAUGH, CHAs. A. SHARBAUGH. 

